Question 1

Patients with diastolic heart failure would present with ____________________

Accepted Answer

A) failure of the ventricles to fill normally. 
B) decreased cardiac contractility. 
C) their heart pumping out more blood than it should with each contraction. 
D) their heart muscle relaxing longer than it should with each contraction. 
A) failure of the ventricles to fill normally. 
B) decreased cardiac contractility. 
C) their heart pumping out more blood than it should with each contraction. 
D) their heart muscle relaxing longer than it should with each contraction.

Question 2

Stroke volume is determined by the extent of venous return and parasympathetic activity.

Accepted Answer

A) True 
 B)False

Question 3

Which of the following is the result of vagal influences on the heart

Accepted Answer

A) enhanced potassium permeability at the SA node 
B) enhanced calcium permeability at the SA node 
C) more frequent depolarization of the SA node 
D) stimulation of the heart by epinephrine 
A) enhanced potassium permeability at the SA node 
B) enhanced calcium permeability at the SA node 
C) more frequent depolarization of the SA node 
D) stimulation of the heart by epinephrine

Question 4

Which of these nerves to the heart alters cardiac output by increasing heart rate and contractility

Accepted Answer

A) motor 
B) sensory 
C) sympathetic 
D) parasympathetic 
A) motor 
B) sensory 
C) sympathetic 
D) parasympathetic

Question 5

Parasympathetic stimulation of the AV node increases the speed of transmission of the impulse through the AV node.

Accepted Answer

A) True 
 B)False

Question 6

The parasympathetic nervous system has little effect on which of these types of activity

Accepted Answer

A) atrial activity 
B) AV node activity 
C) SA node activity 
D) ventricular muscle activity 
A) atrial activity 
B) AV node activity 
C) SA node activity 
D) ventricular muscle activity

Question 7

If the cardiac output is 4800 mL/min and the heart rate is 60 beats per minute, what is the average stroke volume in millilitres

Accepted Answer

A) 60 mL 
B) 70 mL 
C) 80 mL 
D) 120 mL 
A) 60 mL 
B) 70 mL 
C) 80 mL 
D) 120 mL

Question 8

All of the blood within the ventricles is ejected during ventricular systole.

Accepted Answer

A) True 
 B)False

Question 9

Match the EKG features, labelled a. through f., with their correct characteristic.
-atrial depolarization

Accepted Answer

A) P wave 
B) QRS complex 
C) T wave 
D) PR interval 
E) TP interval
F)ST segment 
A) P wave 
B) QRS complex 
C) T wave 
D) PR interval 
E) TP interval
F)ST segment

Question 10

Which of these statements describes cardiac fibrillation

Accepted Answer

A) backflow of blood throughout the heart 
B) coordinated function of nodal cells 
C) failure of the heart valves and blood vessels to function 
D) uncoordinated excitation and contraction of cardiac cells 
A) backflow of blood throughout the heart 
B) coordinated function of nodal cells 
C) failure of the heart valves and blood vessels to function 
D) uncoordinated excitation and contraction of cardiac cells

Question 11

Which of these ECG waves represents ventricular repolarization

Accepted Answer

A) P wave 
B) QRS complex 
C) T wave 
D) Ventricular repolarization occurs simultaneously with atrial depolarization and consequently cannot be recorded. 
A) P wave 
B) QRS complex 
C) T wave 
D) Ventricular repolarization occurs simultaneously with atrial depolarization and consequently cannot be recorded.

Question 12

The heart undergoes tetanic contraction during sympathetic stimulation to squeeze out more blood.

Accepted Answer

A) True 
 B)False

Question 13

Which cardiac valve prevents regurgitation of blood from the right ventricle to the atrium

Accepted Answer

A) tricuspid 
B) mitral 
C) bicuspid 
D) aortic 
A) tricuspid 
B) mitral 
C) bicuspid 
D) aortic

Question 14

Atrial systole lasts throughout ventricular systole.

Accepted Answer

A) True 
 B)False

Question 15

Compared to cardiac muscle tissue, skeletal muscle tissue has a(n) ____________________ duration for its refractory period.

Accepted Answer

The answer of Compared to cardiac muscle tissue, skeletal muscle...

Question 16

The T wave represents the depolarization of the ventricles.

Accepted Answer

A) True 
 B)False

Question 17

Atrial repolarization does not occur.

Accepted Answer

A) True 
 B)False

Question 18

Match the anatomical structures, labelled a. through e., with the heart characteristics. (Options may be used more than once or not at all.)
-the ventricles' left is much thicker

Accepted Answer

A) tricuspid valve 
B) myocardium 
C) aortic semilunar valve 
D) AV node 
E) sinoatrial node 
A) tricuspid valve 
B) myocardium 
C) aortic semilunar valve 
D) AV node 
E) sinoatrial node

Question 19

Match the cardiovascular features, labelled a. through d., with their correct characteristic.
-abnormal clot attached to a vessel wall

Accepted Answer

A) angina pectoris 
B) embolus 
C) atherosclerosis 
D) thrombus 
A) angina pectoris 
B) embolus 
C) atherosclerosis 
D) thrombus

Question 20

Why is the sinoatrial node the heart's normal pacemaker

Accepted Answer

A) It has the fastest natural rate of autorhythmicity. 
B) It has both sympathetic and parasympathetic innervation. 
C) It is under the control of AV node. 
D) Activation of K⁺ channels occurs more rapidly in this region than elsewhere in the heart. 
A) It has the fastest natural rate of autorhythmicity. 
B) It has both sympathetic and parasympathetic innervation. 
C) It is under the control of AV node. 
D) Activation of K⁺ channels occurs more rapidly in this region than elsewhere in the heart.

Patients with diastolic heart failure would present with ____________________

Stroke volume is determined by the extent of venous return and parasympathetic activity.

Which of the following is the result of vagal influences on the heart

Which of these nerves to the heart alters cardiac output by increasing heart rate and contractility

Parasympathetic stimulation of the AV node increases the speed of transmission of the impulse through the AV node.

The parasympathetic nervous system has little effect on which of these types of activity

If the cardiac output is 4800 mL/min and the heart rate is 60 beats per minute, what is the average stroke volume in millilitres

All of the blood within the ventricles is ejected during ventricular systole.

Match the EKG features, labelled a. through f., with their correct characteristic. -atrial depolarization

Which of these statements describes cardiac fibrillation

Which of these ECG waves represents ventricular repolarization

The heart undergoes tetanic contraction during sympathetic stimulation to squeeze out more blood.

Which cardiac valve prevents regurgitation of blood from the right ventricle to the atrium

Atrial systole lasts throughout ventricular systole.

Compared to cardiac muscle tissue, skeletal muscle tissue has a(n) ____________________ duration for its refractory period.

The T wave represents the depolarization of the ventricles.

Atrial repolarization does not occur.

Match the anatomical structures, labelled a. through e., with the heart characteristics. (Options may be used more than once or not at all.) -the ventricles' left is much thicker

Match the cardiovascular features, labelled a. through d., with their correct characteristic. -abnormal clot attached to a vessel wall

Why is the sinoatrial node the heart's normal pacemaker

The Foundation of Physiology

Cell Physiology

The Central Nervous System

The Peripheral Nervous System: Sensory, Autonomic, Somatic

Principles of Endocrinology: The Central Endocrine Glands

The Endocrine Glands

Muscle Physiology

Vascular Physiology

The Blood

Body Defences

The Respiratory System

The Urinary System

Fluid and Acidbase Balance

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Exam 8: Cardiac Physiology

Patients with diastolic heart failure would present with ____________________

Stroke volume is determined by the extent of venous return and parasympathetic activity.

Which of the following is the result of vagal influences on the heart

Which of these nerves to the heart alters cardiac output by increasing heart rate and contractility

Parasympathetic stimulation of the AV node increases the speed of transmission of the impulse through the AV node.

The parasympathetic nervous system has little effect on which of these types of activity

If the cardiac output is 4800 mL/min and the heart rate is 60 beats per minute, what is the average stroke volume in millilitres

All of the blood within the ventricles is ejected during ventricular systole.

Match the EKG features, labelled a. through f., with their correct characteristic. -atrial depolarization

Which of these statements describes cardiac fibrillation

Which of these ECG waves represents ventricular repolarization

The heart undergoes tetanic contraction during sympathetic stimulation to squeeze out more blood.

Which cardiac valve prevents regurgitation of blood from the right ventricle to the atrium

Atrial systole lasts throughout ventricular systole.

Compared to cardiac muscle tissue, skeletal muscle tissue has a(n) ____________________ duration for its refractory period.

The T wave represents the depolarization of the ventricles.

Atrial repolarization does not occur.

Match the anatomical structures, labelled a. through e., with the heart characteristics. (Options may be used more than once or not at all.) -the ventricles' left is much thicker

Match the cardiovascular features, labelled a. through d., with their correct characteristic. -abnormal clot attached to a vessel wall

Why is the sinoatrial node the heart's normal pacemaker

The Foundation of Physiology

Cell Physiology

The Central Nervous System

The Peripheral Nervous System: Sensory, Autonomic, Somatic

Principles of Endocrinology: The Central Endocrine Glands

The Endocrine Glands

Muscle Physiology

Vascular Physiology

The Blood

Body Defences

The Respiratory System

The Urinary System

Fluid and Acidbase Balance

The Digestive System

Energy Balance and Temperature Regulation

The Reproductive System

Filters